| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | //
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| 27 | // --------------------------------------------------------------
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| 28 | // GEANT 4 - ULTRA experiment example
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| 29 | // --------------------------------------------------------------
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| 30 | //
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| 31 | // Code developed by:
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| 32 | // B. Tome, M.C. Espirito-Santo, A. Trindade, P. Rodrigues
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| 33 | //
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| 34 | // ****************************************************
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| 35 | // * UltraFresnelLensParameterisation.cc
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| 36 | // ****************************************************
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| 37 | //
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| 38 | // Class derived from G4VPVParameterisation and used to define a Fresnel lens geometry
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| 39 | // through a parameterised replication of G4Cons volumes. These volumes are frustra
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| 40 | // of cones describing the lens grooves.
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| 41 | // An UltraFresnelLensParameterisation object is created in the UltraFresnelLens class
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| 42 | //
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| 43 | #include <cmath>
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| 44 | #include "UltraFresnelLensParameterisation.hh"
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| 45 | #include "UltraFresnelLens.hh"
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| 46 |
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| 47 | #include "G4VPhysicalVolume.hh"
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| 48 | #include "G4ThreeVector.hh"
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| 49 | #include "G4Cons.hh"
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| 50 |
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| 51 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 52 |
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| 53 | UltraFresnelLensParameterisation::UltraFresnelLensParameterisation(UltraFresnelLens* Lens)
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| 54 | {
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| 55 |
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| 56 | FresnelLens = Lens ;
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| 57 | GrooveWidth = Lens->GetGrooveWidth() ;
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| 58 | NumberOfGrooves = Lens->GetNumberOfGrooves() ;
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| 59 |
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| 60 | dZOffset = Lens->GetSagita((NumberOfGrooves-0)*(GrooveWidth)) -
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| 61 | Lens->GetSagita((NumberOfGrooves-1)*(GrooveWidth)) ;
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| 62 | }
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| 63 |
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| 64 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 65 |
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| 66 | UltraFresnelLensParameterisation::~UltraFresnelLensParameterisation()
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| 67 | {;}
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| 68 |
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| 69 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 70 |
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| 71 | void UltraFresnelLensParameterisation::ComputeTransformation
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| 72 | (const G4int GrooveNo, G4VPhysicalVolume* physVol) const
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| 73 | {
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| 74 |
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| 75 | G4double Rmin1 = (GrooveNo+0)*(GrooveWidth) ;
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| 76 | G4double Rmax1 = (GrooveNo+1)*(GrooveWidth) ;
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| 77 |
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| 78 | G4double dZ = FresnelLens->GetSagita(Rmax1) - FresnelLens->GetSagita(Rmin1) ;
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| 79 |
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| 80 | if (dZ <= 0.0){
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| 81 | G4Exception("UltraFresnelLensParameterisation::ComputeTransformation: Groove depth<0 !");
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| 82 | }
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| 83 |
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| 84 | G4ThreeVector origin(0,0,(dZ-dZOffset)/2.);
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| 85 | physVol->SetTranslation(origin);
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| 86 | physVol->SetRotation(0);
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| 87 | }
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| 88 |
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| 89 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 90 |
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| 91 | void UltraFresnelLensParameterisation::ComputeDimensions
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| 92 | (G4Cons& Groove, const G4int GrooveNo, const G4VPhysicalVolume*) const
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| 93 | {
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| 94 | G4double Rmin1 = (GrooveNo+0)*(GrooveWidth) ;
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| 95 | G4double Rmax1 = (GrooveNo+1)*(GrooveWidth) ;
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| 96 |
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| 97 | G4double Rmin2 = Rmin1 ;
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| 98 | G4double Rmax2 = Rmin2+0.0001*mm ;
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| 99 |
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| 100 | G4double dZ = FresnelLens->GetSagita(Rmax1) - FresnelLens->GetSagita(Rmin1) ;
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| 101 |
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| 102 | if (dZ <= 0.0){
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| 103 | G4Exception("UltraFresnelLensParameterisation::ComputeDimensions: Groove depth<0 !");
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| 104 | }
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| 105 |
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| 106 |
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| 107 | Groove.SetInnerRadiusMinusZ(Rmin1) ;
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| 108 | Groove.SetOuterRadiusMinusZ(Rmax1) ;
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| 109 |
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| 110 | Groove.SetInnerRadiusPlusZ(Rmin2) ;
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| 111 | Groove.SetOuterRadiusPlusZ(Rmax2) ;
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| 112 |
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| 113 | Groove.SetZHalfLength(dZ/2.) ;
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| 114 |
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| 115 | #ifdef ULTRA_VERBOSE
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| 116 |
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| 117 | G4cout << "UltraFresnelLensParameterisation: GrooveNo " << GrooveNo+1 <<
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| 118 | " Rmin1, Rmax1(mm): " << Rmin1/mm <<" "<< Rmax1/mm << " dZ(mm) " << dZ/mm << G4endl ;
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| 119 | #endif
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| 120 |
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| 121 |
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| 122 |
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| 123 | }
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| 124 |
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